Cooling modules can be hot-swapped while the enclosure is still running, assuming that only one module is
removed at a time and the swap takes no longer than two minutes. Ensure that you have a replacement
cooling module before you remove the defective cooling module.
Figure 27. Cooling Module
System Airflow
The system must be operated with low-pressure rear exhaust installation. Back pressure created by the rack
doors and obstacles is not to exceed 5 pascals (0.5 mm water gauge). The cooling system provides sufficient
capacity to ensure that maximum temperatures are not exceeded.
The minimum open area for the rack doors is 70%.
Important: The environment in which the enclosure operates must be dust-free to ensure adequate airflow.
Environmental Service Module (ESM)
This user guide describes the 12Gb/s JBOD ESMs. The ESMs are mechanically and electrically compliant to
the latest SBB V2.1 specification.
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Lenovo Storage D1212/D1224/D3284Hardware Installation and Maintenance Guide
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